{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T07:34:22.318Z","years_from_j2000":26.68,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"hd-94270","name":"HD 94270","class":"g2v_yellow_main_sequence_star","category":"star","object_type":"G2V yellow main-sequence star","mag":7.76,"mag_band":"V","abs_mag":4.41,"abs_mag_band":"V","distance_ly":152.55214408031924,"distance_method":"parallax","ra_deg":163.16368500000002,"dec_deg":-17.030249,"epoch_ra_deg":163.493541,"epoch_dec_deg":-17.173751,"epoch_moved_arcsec":3.587,"pm_ra_mas_yr":-59.84,"pm_dec_mas_yr":-120.41,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Crater","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-94270","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"10527-1702","age_years":8907114000,"companions":[{"measured":2015,"magnitude":19.84,"components":"AB","discoverer_code":"TOK 277","separation_arcsec":279.1,"position_angle_deg":274}],"mass_solar":1.003,"radius_solar":1.242,"spectral_type":"G2V","color_index_bv":0.579,"luminosity_solar":1.4996848355023729,"radial_velocity_km_s":21,"spectral_type_source":"SIMBAD (1988MSS...C04....0H, quality C)","surface_gravity_log_g":4.19,"surface_temperature_k":5829,"proper_motion_ra_mas_yr":-59.84,"proper_motion_dec_mas_yr":-120.41,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: Gaia's classifier calls the source a binary, which GSP-Phot fitted as one star","bolometric_luminosity_solar":1.5968},"designations":[{"catalog":"HD","designation":"HD 94270"},{"catalog":"HIP","designation":"HIP 53172"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-02T19:50:56.720Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}